U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 21601 - 21625 of 73929

Studies of photoconductivity and FET behavior in examining drift mobility, surface depletion, and transient effects in Si-doped GaN nanowires examined in vacuum and air

May 3, 2013
Author(s)
Norman A. Sanford, Lawrence H. Robins, Paul T. Blanchard, K. Soria, B. Klein, Kristine A. Bertness, John B. Schlager, Aric W. Sanders
Variable intensity photoconductivity (PC) performed under vacuum at 325 nm was used to estimate drift mobility and negative surface charge density sigma for c-axis oriented Si-doped GaN nanowires (NWs). In this approach we assumed that sigma was

Synapsable quadruplex-mediated fibers

May 3, 2013
Author(s)
Veronika A. Szalai, Miguel A. Mendez
We have fabricated and characterized a novel DNA based nanofiber created by synergistic self-assembly of guanine quadruplex (Hoogsteen base pairing) and double-stranded DNA (Watson-Crick base pairing). The assembly of our nanofibers occurs in several steps

Towards Ontology Evaluation across the Life Cycle

May 3, 2013
Author(s)
Fabian M. Neuhaus, Amanda Vizedom, Ken Baclawski, Mike Bennet, Mike Dean, Michael Denny, Michael Gruninger, Ali Hashemi, Terry Longstreth, Leo Obrst, Steven R. Ray, Ram D. Sriram, Todd Schneider, Marcela Vegetti, Matthew West, Peter Yim
Currently, there is no agreed on methodology for development of ontologies, and there is no consensus on how ontologies should be evaluated. Consequently, evaluation techniques and tools are not widely utilized in the development of ontologies. This can

Assessment of the Thermophysical Properties of Thermally Stressed RP-1 and RP-2

May 2, 2013
Author(s)
Tara J. Fortin, Thomas J. Bruno
Density, speed of sound, and viscosity have been measured for samples of RP-1 and RP-2 that were stressed for 0.5 min at 475 °C and 510 °C at a pressure of 17 MPa. Density and speed of sound were measured from 5 °C to 50 °C for the samples stressed at 475

Nanosilver suppresses growth and induces oxidative damage to DNA in Caenorhabditis elegans

May 2, 2013
Author(s)
Bryant C. Nelson, Bryce J. Marquis, Piper R. Hunt, Katherine M. Tyner, Sean Conklin, Nicholas Olejnik, Robert L. Sprando
The utility of C. elegans as an alternative model to assess nanomaterial toxicity was evaluated using 10 nm silver particles (10nmAg). Endpoints of nanomaterial uptake and localization, larval growth, morphology, and DNA damage were assessed. Orally

A reference system for urinary albumin: current status

May 1, 2013
Author(s)
David M. Bunk, Karen W. Phinney, John C. Lieske, Olga Bondar, W. Greg Miller, Lorin M. Bachmann, Andrew S. Narva, Yoshihisa Itoh, Schimmel Heinz
Background: Increased urinary excretion of albumin reflects kidney damage and is a recognized risk factor for progression of renal and cardiovascular disease. Considerable inter-method differences have been reported for both albumin and creatinine

Automatically Detecting Faulty Regulation in HVAC Controls

May 1, 2013
Author(s)
Daniel A. Veronica
A new method is introduced to automatically detect faulty regulation of temperatures, pressures, and flow rates within the heating, ventilating, and air-conditioning (HVAC) systems and equipment of buildings by using digital data typically available from

Haplotype Data for 23 Y-chromosome markers in four U.S. population groups

May 1, 2013
Author(s)
Michael D. Coble, Carolyn R. Steffen, John M. Butler
The PowerPlex Y23 kit contains 23 Y-chromosomal loci including all 17 of the markers in the Yfiler Y-STR kit plus six additional markers: DYS481, DYS533, DYS549, DYS570, DYS576, and DYS643. We have typed 1032 unrelated population samples from four self

Influence of Pt spacer thickness on the domain nucleation in ultrathin Co/Pt/Co trilayers

May 1, 2013
Author(s)
Robert D. Shull, Yury Y. Iunin, Y. P. Kabanov, Valerian I. Nikitenko, O. V. Skryabina, C. L. Chien
The effect of varying the interlayer coupling between two 0.6 nm thick Co layers with perpendicular anisotropy on their magnetic ground state and the domain nucleation processes during a field reversal was studied. A surprising transition from out-of-plane

ITL Publishes Security and Privacy Controls for Federal Agencies

May 1, 2013
Author(s)
Elizabeth B. Lennon
This ITL Bulletin for May 2013 announces the publication of NIST Special Publication 800-53, Revision 4, Security and Privacy Controls for Federal Information Systems and Organizations. Developed by the Joint Task Force Transformation Initiative

Light-Wave Mixing with Quantum Gases

May 1, 2013
Author(s)
Lu Deng, Edward W. Hagley, R Q. Wang, Charles W. Clark
Nonlinear optics has come a long way since the laser. This article reviews recent progress in coherent light-matter wave mixing and introduces some new concepts that will reframe future research directions.
Displaying 21601 - 21625 of 73929
Was this page helpful?